should be it

external/duckdb/test/sql/storage/read_duckdb/concurrent_duckdb_read.test_slow

@@ -0,0 +1,37 @@
+# name: test/sql/storage/read_duckdb/concurrent_duckdb_read.test_slow
+# description: Test concurrent read of a DuckDB file
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_concurrent.db'
+
+statement ok
+CREATE TABLE read_duckdb_concurrent.my_tbl AS SELECT * FROM range(1000000) t(i)
+
+statement ok
+DETACH read_duckdb_concurrent
+
+concurrentloop i 0 10
+
+loop x 0 100
+
+onlyif i=0
+query I
+SHOW DATABASES
+----
+memory
+
+onlyif i=0
+query I
+SHOW TABLES
+----
+
+endloop
+
+onlyif i>0
+query II
+SELECT COUNT(*), SUM(i) FROM read_duckdb('__TEST_DIR__/read_duckdb_concurrent.db')
+----
+1000000	499999500000
+
+endloop

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_basic.test

@@ -0,0 +1,91 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_basic.test
+# description: Test basic usage of read_duckdb
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_test.db'
+
+statement ok
+CREATE TABLE read_duckdb_test.my_tbl AS SELECT 42 i
+
+# we cannot read a database that is already attached
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db')
+----
+already attached by database
+
+statement ok
+DETACH read_duckdb_test
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db')
+----
+42
+
+query I
+SELECT COUNT(*) FROM duckdb_databases
+----
+1
+
+# globbing
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_test2.db'
+
+statement ok
+CREATE TABLE read_duckdb_test2.other_tbl AS SELECT 100 i
+
+statement ok
+DETACH read_duckdb_test2
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test*.db')
+----
+42
+100
+
+# replacement scan
+query I
+SELECT * FROM '__TEST_DIR__/read_duckdb_test*.db'
+----
+42
+100
+
+# prepared statement
+statement ok
+PREPARE v1 AS FROM read_duckdb('__TEST_DIR__/read_duckdb_test*.db')
+
+query I
+EXECUTE v1
+----
+42
+100
+
+# multi-table
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_test.db'
+
+statement ok
+CREATE TABLE read_duckdb_test.my_tbl2 AS SELECT 84 j
+
+statement ok
+DETACH read_duckdb_test
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db')
+----
+multiple tables
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db', table_name='my_tbl')
+----
+42
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db', table_name='my_tbl2')
+----
+84
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_test.db', table_name='my_tblx')
+----
+my_tbl2

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_generated.test

@@ -0,0 +1,30 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_generated.test
+# description: Test read_duckdb with generated columns
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_generated.db' AS rd
+
+statement ok
+CREATE TABLE rd.tbl (
+	price INTEGER,
+	amount_sold INTEGER,
+	total_profit AS (price * amount_sold),
+	non_generated INTEGER
+);
+
+statement ok
+INSERT INTO rd.tbl VALUES (5,4, 100);
+
+statement ok
+DETACH rd
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_generated.db')
+----
+total_profit
+
+query III
+SELECT non_generated + 42, price, amount_sold FROM read_duckdb('__TEST_DIR__/read_duckdb_generated.db')
+----
+142	5	4

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_index.test

@@ -0,0 +1,28 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_index.test
+# description: Test read_duckdb with an index
+# group: [read_duckdb]
+
+# FIXME: bug in WAL replay with read-only mode attach
+require no_alternative_verify
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_index.db'
+
+statement ok
+CREATE TABLE read_duckdb_index.my_tbl(i INTEGER PRIMARY KEY);
+
+statement ok
+INSERT INTO read_duckdb_index.my_tbl SELECT i + 1 FROM range(1000000) t(i);
+
+statement ok
+DETACH read_duckdb_index
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_index.db') WHERE i=42873
+----
+42873
+
+query II
+SELECT *, rowid FROM read_duckdb('__TEST_DIR__/read_duckdb_index.db') WHERE i=42873
+----
+42873	42872

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_schema.test

@@ -0,0 +1,42 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_schema.test
+# description: Test basic usage of read_duckdb
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_schema.db' AS rd
+
+statement ok
+CREATE SCHEMA rd.s1;
+
+
+statement ok
+CREATE SCHEMA rd.s2;
+
+statement ok
+CREATE TABLE rd.s1.my_tbl AS SELECT 42 i
+
+statement ok
+CREATE TABLE rd.s2.my_tbl AS SELECT 84 i
+
+statement ok
+DETACH rd
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_schema.db')
+----
+s1.my_tbl
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_schema.db', schema_name='s1', table_name='my_tbl')
+----
+42
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_schema.db', schema_name='s2', table_name='my_tbl')
+----
+84
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_schema.db', schema_name='s3', table_name='my_tbl')
+----
+schema_name="s3", table_name="my_tbl"

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_suggested.test

@@ -0,0 +1,26 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_suggested.test
+# description: Test suggestions
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_suggested.db' AS suggested
+
+foreach table_name aaa bbb ccc ddd eee fff ggg hhh iii jjj kkk lll mmm nnn ooo ppp qqq rrr sss ttt uuu vvv
+
+statement ok
+CREATE TABLE suggested.${table_name} AS SELECT 42 i
+
+endloop
+
+statement ok
+DETACH suggested
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_suggested.db', table_name='ffg')
+----
+fff
+
+statement error
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_suggested.db', table_name='vvx')
+----
+vvv

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_top_n.test

@@ -0,0 +1,54 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_top_n.test
+# group: [read_duckdb]
+
+# create a bunch of tables
+loop i 0 5
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_top_n${i}.db' AS rd
+
+statement ok
+CREATE TABLE rd.tbl AS SELECT ${i} grp, i val FROM range(${i} * 1000, ${i} * 1000 + 1000) t(i)
+
+statement ok
+DETACH rd
+
+endloop
+
+query II
+FROM '__TEST_DIR__/read_duckdb_top_n*.db' ORDER BY val DESC LIMIT 5
+----
+4	4999
+4	4998
+4	4997
+4	4996
+4	4995
+
+
+query II
+FROM '__TEST_DIR__/read_duckdb_top_n*.db' WHERE grp<=2 ORDER BY val DESC LIMIT 5
+----
+2	2999
+2	2998
+2	2997
+2	2996
+2	2995
+
+query I
+SELECT val FROM '__TEST_DIR__/read_duckdb_top_n*.db' WHERE grp<=2 ORDER BY val DESC LIMIT 5
+----
+2999
+2998
+2997
+2996
+2995
+
+query I
+SELECT SUM(val) FROM '__TEST_DIR__/read_duckdb_top_n*.db' WHERE grp%2=0
+----
+7498500
+
+query I
+SELECT SUM(val) FROM '__TEST_DIR__/read_duckdb_top_n*.db' WHERE grp::VARCHAR = '2'
+----
+2499500

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_tpch.test_slow

@@ -0,0 +1,78 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_tpch.test_slow
+# group: [read_duckdb]
+
+require tpch
+
+statement ok
+CALL dbgen(sf=1, suffix='_original');
+
+foreach tbl lineitem nation orders supplier part partsupp region customer
+
+statement ok
+ATTACH '__TEST_DIR__/${tbl}_sf1.db' AS ${tbl}
+
+statement ok
+CREATE TABLE ${tbl}.${tbl} AS FROM ${tbl}_original
+
+statement ok
+DETACH ${tbl}
+
+statement ok
+CREATE VIEW ${tbl} AS FROM read_duckdb('__TEST_DIR__/${tbl}_sf1.db')
+
+endloop
+
+loop i 1 9
+
+query I
+PRAGMA tpch(${i})
+----
+<FILE>:extension/tpch/dbgen/answers/sf1/q0${i}.csv
+
+endloop
+
+loop i 10 23
+
+query I
+PRAGMA tpch(${i})
+----
+<FILE>:extension/tpch/dbgen/answers/sf1/q${i}.csv
+
+endloop
+
+# top-n
+query IIIIIIII
+SELECT o_orderkey, o_custkey, o_orderstatus, o_totalprice, o_orderdate, o_orderpriority, o_clerk, o_shippriority FROM orders ORDER BY o_orderkey LIMIT 5;
+----
+1	36901	O	173665.47	1996-01-02	5-LOW	Clerk#000000951	0
+2	78002	O	46929.18	1996-12-01	1-URGENT	Clerk#000000880	0
+3	123314	F	193846.25	1993-10-14	5-LOW	Clerk#000000955	0
+4	136777	O	32151.78	1995-10-11	5-LOW	Clerk#000000124	0
+5	44485	F	144659.20	1994-07-30	5-LOW	Clerk#000000925	0
+
+query IIIIIIII
+SELECT o_orderkey, o_custkey, o_orderstatus, o_totalprice, o_orderdate, o_orderpriority, o_clerk, o_shippriority FROM orders ORDER BY o_orderkey DESC LIMIT 5;
+----
+6000000	110063	O	37625.29	1996-08-31	2-HIGH	Clerk#000000411	0
+5999975	113398	F	63216.65	1993-07-25	1-URGENT	Clerk#000000813	0
+5999974	55448	F	92750.90	1993-07-28	3-MEDIUM	Clerk#000000776	0
+5999973	32071	O	68906.56	1997-07-13	4-NOT SPECIFIED	Clerk#000000130	0
+5999972	143594	O	114856.68	1996-05-02	3-MEDIUM	Clerk#000000536	0
+
+query IIIIIIIIIIIIIII
+SELECT l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode FROM lineitem ORDER BY l_shipdate, l_orderkey LIMIT 5;
+----
+721220	177803	5355	2	19	35735.20	0.08	0.03	R	F	1992-01-02	1992-02-04	1992-01-09	TAKE BACK RETURN	SHIP
+842980	188156	5711	4	5	6220.75	0.01	0.03	A	F	1992-01-02	1992-03-20	1992-01-20	COLLECT COD	REG AIR
+904677	56678	1689	1	43	70290.81	0.08	0.01	R	F	1992-01-02	1992-03-22	1992-01-14	COLLECT COD	AIR
+990147	154290	4291	1	6	8065.74	0.10	0.01	R	F	1992-01-02	1992-03-01	1992-01-15	NONE	REG AIR
+1054181	16217	6218	1	45	50994.45	0.03	0.08	R	F	1992-01-02	1992-02-05	1992-01-15	NONE	MAIL
+
+query IIIIIIIIIIIIIII
+SELECT l_orderkey,l_partkey,l_suppkey,l_linenumber,l_quantity,l_extendedprice,l_discount,l_tax,l_returnflag,l_linestatus,l_shipdate,l_commitdate,l_receiptdate,l_shipinstruct,l_shipmode FROM lineitem ORDER BY l_orderkey DESC, l_shipdate DESC LIMIT 5;
+----
+6000000	32255	2256	1	5	5936.25	0.04	0.03	N	O	1996-11-02	1996-11-19	1996-12-01	TAKE BACK RETURN	MAIL
+6000000	96127	6128	2	28	31447.36	0.01	0.02	N	O	1996-09-22	1996-10-01	1996-10-21	NONE	AIR
+5999975	37131	2138	3	18	19226.34	0.04	0.01	A	F	1993-11-17	1993-08-28	1993-12-08	DELIVER IN PERSON	FOB
+5999975	6452	1453	2	7	9509.15	0.04	0.00	A	F	1993-11-02	1993-09-23	1993-11-19	DELIVER IN PERSON	SHIP
+5999975	7272	2273	1	32	37736.64	0.07	0.01	R	F	1993-10-07	1993-09-30	1993-10-21	COLLECT COD	REG AIR

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_transaction.test

@@ -0,0 +1,28 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_transaction.test
+# description: Test using read_duckdb in a transaction
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_transaction.db' AS rd
+
+statement ok
+CREATE TABLE rd.my_tbl AS SELECT 42 i
+
+statement ok
+DETACH rd
+
+statement ok
+BEGIN
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_transaction.db')
+----
+42
+
+query I
+SELECT * FROM read_duckdb('__TEST_DIR__/read_duckdb_transaction.db')
+----
+42
+
+statement ok
+COMMIT

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_union_by_name.test

@@ -0,0 +1,32 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_union_by_name.test
+# description: Test read_duckdb with union by name
+# group: [read_duckdb]
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_unionbyname1.db' AS rd
+
+statement ok
+CREATE TABLE rd.my_tbl AS SELECT 100 i, 84 col1
+
+statement ok
+DETACH rd
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_unionbyname2.db' AS rd
+
+statement ok
+CREATE TABLE rd.my_tbl AS SELECT 200 i, 84 col2
+
+statement ok
+DETACH rd
+
+query III
+SELECT * FROM read_duckdb(['__TEST_DIR__/read_duckdb_unionbyname1.db', '__TEST_DIR__/read_duckdb_unionbyname2.db'], union_by_name=true);
+----
+100	84	NULL
+200	NULL	84
+
+statement error
+SELECT * FROM read_duckdb(['__TEST_DIR__/read_duckdb_unionbyname1.db', '__TEST_DIR__/read_duckdb_unionbyname2.db']);
+----
+could not be found in file

external/duckdb/test/sql/storage/read_duckdb/read_duckdb_virtual_columns.test

@@ -0,0 +1,23 @@
+# name: test/sql/storage/read_duckdb/read_duckdb_virtual_columns.test
+# description: Test basic usage of read_duckdb
+# group: [read_duckdb]
+
+foreach dbindex 1 2
+
+statement ok
+ATTACH '__TEST_DIR__/read_duckdb_virt${dbindex}.db' AS rd
+
+statement ok
+CREATE TABLE rd.my_tbl AS SELECT 42 + i AS v FROM range(0, ${dbindex}) t(i)
+
+statement ok
+DETACH rd
+
+endloop
+
+query III
+SELECT rowid, (filename.replace('\', '/').split('/'))[3], * FROM read_duckdb('__TEST_DIR__/read_duckdb_virt[1-2].db') ORDER BY filename, rowid
+----
+0	read_duckdb_virt1.db	42
+0	read_duckdb_virt2.db	42
+1	read_duckdb_virt2.db	43